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            <div>LEF 5.8 C&#47;C++ Programming Interface  (Open Licensing Program)</div>
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      <h1>8<a name="1008781">&nbsp;</a></h1>
      <h1><a name="1014156">LEF File Comparison Utility</a></h1>
      <p><a name="1019932">The Cadence</a><font color="#000000"><sup>&#174;</sup></font> Library Exchange Format (LEF) reader provides the following utility for comparing LEF files. </p>
      <h3><a name="1022364">lefdefdiff</a></h3>
      <p><a name="1022368">Compares two LEF or DEF files and reports any differences between them.</a></p>
      <p><a name="1022503">Because LEF and DEF files can be very large, the </a><font size="2" face="'Courier New'" color="#000000">lefdefdiff</font> utility writes each construct from a file to an output file in the <font size="2" face="'Courier New'" color="#000000">&#47;tmp</font> directory. The utility writes the constructs using the format:</p>
      <blockquote><a name="1022610"><font size="2" face="'Courier New'" color="#000000"><em>section_head</em></font></a><font size="2" face="'Courier New'" color="#000000">&#47;</font><font size="2" face="'Courier New'" color="#000000"><em>subsection</em></font><font size="2" face="'Courier New'" color="#000000">&#47;</font><font size="2" face="'Courier New'" color="#000000"><em>subsection</em></font><font size="2" face="'Courier New'" color="#000000">&#47;</font> ... <font size="2" face="'Courier New'" color="#000000">&#47;</font><font size="2" face="'Courier New'" color="#000000"><em>statement</em></font> </blockquote>
      <p><a name="1022612">The </a><font size="2" face="'Courier New'" color="#000000">lefdefdiff</font> utility then sorts the output files and uses the <font size="2" face="'Courier New'" color="#000000">diff</font> program to compare the two files. Always verify the accuracy of the <font size="2" face="'Courier New'" color="#000000">diff</font> results. </p>
      <p><font color="#000000"><strong>Note: </strong></font><a name="1022623">You must specify the </a><font size="2" face="'Courier New'" color="#000000">&#45;lef</font> or <font size="2" face="'Courier New'" color="#000000">&#45;def</font>, <font size="2" face="'Courier New'" color="#000000"><em>inFileName1</em></font>, and <font size="2" face="'Courier New'" color="#000000"><em>inFileName2</em></font> arguments in the listed order. All other arguments can be specified in any order after these arguments. </p>
      <h4><a name="1022171">Syntax</a></h4>
      <dl>
        <font size="2" face="'Courier New'" color="#000000"><a name="1020526">lefdefdiff<dd>{&#45;lef | &#45;def} <dd></a><font size="2" face="'Courier New'" color="#000000"><em>inFileName1</em></font> <dd><font size="2" face="'Courier New'" color="#000000"><em>inFileName2</em></font> <dd>[&#45;o <font size="2" face="'Courier New'" color="#000000"><em>outFileName</em></font>] <dd>[&#45;path <font size="2" face="'Courier New'" color="#000000"><em>pathName</em></font>] <dd>[&#45;quick] <dd>[&#45;d] <dd>[&#45;ignorePinExtra]<dd>[&#45;ignoreRowName]<dd>[&#45;h]</font>
      </dl>
      <h4><a name="1022176">Arguments</a></h4>
      <p>
        <strong></strong>
        <strong><a name="1022388"><font size="2" face="'Courier New'" color="#000000">&#45;d</font></a> </strong>
      </p>
      <blockquote><a name="1023015">Uses the gnu </a><font size="2" face="'Courier New'" color="#000000">diff</font> program to compare the files for a smaller set of differences. Use this argument only for UNIX platforms. </blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022632"><font size="2" face="'Courier New'" color="#000000">&#45;h</font></a> </strong>
      </p>
      <blockquote><a name="1023026">Returns the syntax and command usage for the </a><font size="2" face="'Courier New'" color="#000000">lefdefdiff</font> utility. </blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022462"><font size="2" face="'Courier New'" color="#000000">&#45;ignorePinExtra</font></a></strong>
      </p>
      <blockquote><a name="1023033">Ignores any </a><font size="2" face="'Courier New'" color="#000000">.extra</font><font size="2" face="'Courier New'" color="#000000"><em>N</em></font> statements in the pin name. This argument can only be used when comparing DEF files. </blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022463"><font size="2" face="'Courier New'" color="#000000">&#45;ignoreRowName</font></a></strong>
      </p>
      <blockquote><a name="1023041">Ignores the row name when comparing </a><font size="2" face="'Courier New'" color="#000000">ROW</font> statements in the DEF files. This argument can only be used when comparing DEF files.</blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022392"><font size="2" face="'Courier New'" color="#000000"><em>inFileName1</em></font></a> </strong>
      </p>
      <blockquote><a name="1023049">Specifies the first LEF or DEF file.</a></blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022394"><font size="2" face="'Courier New'" color="#000000"><em>inFileName2</em></font></a></strong>
      </p>
      <blockquote><a name="1023056">Specifies the LEF or DEF file to compare with the first file.</a></blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022409"><font size="2" face="'Courier New'" color="#000000">&#45;lef | &#45;def</font></a> </strong>
      </p>
      <blockquote><a name="1023064">Specifies whether you are comparing LEF or DEF files. </a></blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022413"><font size="2" face="'Courier New'" color="#000000">&#45;o </font></a><font size="2" face="'Courier New'" color="#000000"><em>outFileName</em></font></strong>
      </p>
      <blockquote><a name="1023071">Outputs the results of the comparison to the specified file.<br></a><font color="#000000"><em>Default:</em></font> Outputs the results to the screen</blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022423"><font size="2" face="'Courier New'" color="#000000">&#45;path </font></a><font size="2" face="'Courier New'" color="#000000"><em>pathName</em></font></strong>
      </p>
      <blockquote><a name="1023079">Temporarily stores the intermediate files created by the </a><font size="2" face="'Courier New'" color="#000000">lefdefdiff</font> utility in the specified path directory.<br><font color="#000000"><em>Default:</em></font> Temporarily stores the files in the current directory</blockquote>
      <p>
        <strong></strong>
        <strong><a name="1022441"><font size="2" face="'Courier New'" color="#000000">&#45;quick</font></a></strong>
      </p>
      <blockquote><a name="1023087">Uses the </a><font size="2" face="'Courier New'" color="#000000">bdiff</font> program to perform a faster comparison.</blockquote>
      <h3><a name="1021641">Example</a></h3>
      <p><a name="1021642">The following example shows an output file created by the </a><font size="2" face="'Courier New'" color="#000000">lefdefdiff</font> utility after comparing two LEF files: </p>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022459">#The names of the two LEF files that were compared.</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022575">&#60; file1.lef </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022540">&#62; file2.lef </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022576">#Statements listed under Added were found in file2.lef but not in file1.lef.</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022545">Added:</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022546">&#62; LAYER M1 SPACING 0.6</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022578">#Statements listed under Deleted were found in file1.lef but not in file2.lef.</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022547">Deleted:</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022548">&#60; LAYER RX LENGTHTHRESHOLD 0.45</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022549">&#60; LAYER RX LENGTHTHRESHOLD 0.9 </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022558">&#60; LAYER RX MINIMUMCUT 2 WIDTH 2.5</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022559">#Changed always contains two statements: the statement as it appears in file1.lef and the statement as it appears in file2.lef.</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022587">CHANGED: </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022560">&#60; MACRO INV_B EEQ INV SYMMETRY X Y R90 </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022561">&#45;&#45;&#45;</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022562">&#62; MACRO INV_B CLASS CORE EEQ INV SYMMETRY X Y R90 </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022570">Added: </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022571">&#62; MACRO INV_B ORIGIN ( 0 0 )</a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022572">Added: </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022573">&#62; OBS PATH ( 58.8 3 ) ( 58.8 123 ) </a></font>
      </blockquote>
      <blockquote>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"></font>
        <font size="2" face="&quot;Courier New&quot;" color="#000000"><a name="1022574">&nbsp;</a></font>
      </blockquote>
      <p><a name="1022541">&nbsp;</a></p>
      <p><a name="1022460">&nbsp;</a></p>
      <p><a name="1021974">&nbsp;</a></p>
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